Abstract:
A method of transmitting data from a wireless network node over a MIMO channel to a wireless terminal may include transmitting first and second transport data blocks to the wireless terminal over the MIMO channel using a first time-frequency-resource-element (TFRE). Responsive to receiving a NACK message from the wireless terminal corresponding to the first and second transport data blocks transmitted using the first TFRE, the first and second transport data blocks may be retransmitted to the wireless terminal over the MIMO channel using a second TFRE.
Abstract:
A dual mode mobile terminal (MT) (30) is capable of communicating (e.g., with a core network) either via a first radio access network (12) having a first type radio access technology (GSM) or a second radio access network (14) having a second type radio access technology (UTRAN). When conditions warrant, a network node (26) prepares a radio access technology (RAT) handover message (3-9) for transmission to the equipment unit (UE) in conjunction with handover of the mobile terminal (MT) from the first radio access network to the second radio access network, and an associated change of operation mode of the mobile terminal (MT) from the first mode to the second mode. In accordance with the present invention, a radio access technology handover message includes a first information element representative of a first parameter from which a value of a second parameter can be derived so that the second parameter need not be included as a separate information element in the radio access technology handover message. Not including the second parameter as a separate element in the radio access technology handover message facilitates non-segmentation of the radio access technology handover message. In one aspect of the invention, the radio access technology handover message is a RRC Handover to UTRAN message; the first parameter is a Serving-Radio Network Temporary Identifier (S-RNTI 2); and, the second parameter is an information element which facilitates distribution of load and transmission of traffic in the radio access network (e.g., a Default DPCH Offset Value).
Abstract:
A system and method for improving the accuracy of a location estimation measurement within a telecommunication system is disclosed. Transmissions from surrounding base transceiver systems (12A, 12B, 12C, 12D) are received by a reference location device (12) and any inter-base transceiver system timing differences resolved. A location estimate of the mobile station (10) within the telecommunications system is then obtained.
Abstract:
Un metodo de transmisión de una trama de acceso multiple por división de código (CDMA) en una red de comunicaciones celular, comprendiendo el metodo: proporcionar la trama de CDMA de forma que incluya una pluralidad de intervalos y al menos una parte de un espacio de transmisión; ytransmitir la trama, que incluye la pluralidad de intervalos, sobre un canal, estando caracterizado el metodo por: definir el espacio de transmisión usando un factor de dispersión reducido y redundancia aumentada de bits de información que han de ser transmitidos.
Abstract:
A system and corresponding method for utilizing Code Division Multiple Access (CDMA) techniques in compressed modes. In certain embodiments, radio frames on an uplink data channel are formed and transmitted to include at least one transmission gap (TG) therein in a compressed mode. This may be achieved by reducing the spreading factor (e.g., by a factor of two). In combination with reducing the spreading factor, the TG may be tailored or adjusted to its desired length (TGL) by using bit repetition (or reduction of puncturing). This enables the TG length to be tailored to a desired length, without having to increase output power more than necessary. In other embodiments of this invention, frames on an uplink control channel are formed or formatted so as to repeat format indicator (e.g., TFCI) bits therein in compressed mode. Optionally, format indicator bit(s) immediately or directly following the TG may be repeated later in the frame since these bits may sometimes suffer from slightly worse power control than other TFCI bits in the frame. Moreover, any embodiment of this invention is also applicable to downlink channel communications.
Abstract:
Una red de telecomunicaciones que se proporciona para calcular una Combinación de Formatos de Transporte Calculada, CTFC, que se proporciona para ser señalada a al menos uno de un nodo de la red y una unidad de equipo de usuario (20), la Combinación de Formatos de Transporte Calculada, CTFC, que tiene un valor que se codifica para obtener un Indicador de la Combinación de Formatos de Transporte, TFCI, asociado y por ello determinar las combinaciones de los formatos de transporte; en donde: la Combinación de Formatos de Transporte Calculada, CTFC, se genera por la siguiente expresión: donde I es un número de canales de transporte TrCH, en donde TFC(TFI1, TFI2, ..., TFII) es una combinación de los formatos de transporte para la cual el canal de transporte TrCH1 tiene el formato de transporte TFI1, TrCH2 tiene el formato de transporte TFI2, etc., en donde en donde i = 1, 2, ..., I, y L0 = 1; y en donde Lj es un número de formatos de transporte.
Abstract:
The downlink channelization code limitation problem encountered in spread spectrum or CDMA cellular systems is resolved by using codes from a different, non-orthogonal code set when operating in the slotted mode. The non-orthogonal code sets can be constructed by using the same channelization code tree, but applying a different scrambling code.